Nissan loves to skimp on grounds. One of those grounds runs from the engine mount to the chassis on the left side of the engine bay. These cables are prone to severe corrosion and in some cases, breakage. Not having this cable can cause a LOT of electrical problems. Avoid those problems by upgrading to these MASSIVE 4 gauge ground cables. They both replace and add a second cable to the system. Don't want to buy them? Check out the video below to see how to make them yourself!